and now here is the host of "jeopardy!" -- alex trebek! thanks, johnny. thank you, ladies and gentlemen. well, the young woman from nasa, kristin morgan, is relaxing for the next few days, waiting to see which semifinal winners will join her next week in playing for $250,000. today, it'll be dan, colby, or stephanie. good luck. here we go into the jeopardy! round. and now we reveal the categories. and in that category, you must take the clues in order from top to bottom. dan, start. heavy metal heroes, $200.